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相关概念视频

Depolarizing Blockers: Pharmocokinetics01:19

Depolarizing Blockers: Pharmocokinetics

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Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
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采用成像区块选择性共聚物溶解

Or Eivgi1, Alexis C Ravenscroft1, Suzanne A Blum1

  • 1Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States.

Journal of the American Chemical Society
|January 23, 2023
PubMed
概括
此摘要是机器生成的。

这项研究使用分子旋转器来揭示溶剂如何影响区块共聚物溶解和组装. 这种新方法为理解和控制共聚物行为提供了更高的灵敏度.

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科学领域:

  • 聚合物化学
  • 材料科学
  • 超分子化学

背景情况:

  • 了解自组装块共聚物的溶解效应对于控制散装性质至关重要.
  • 直接观察个体块溶解对溶剂变化的反应在实验上具有挑战性.

研究的目的:

  • 开发和应用一种新的方法来定量阐明两性区块共聚物的区块选择性溶解.
  • 研究纳米尺度的溶剂触发组装和拆卸的机制.

主要方法:

  • 使用集成到基于ROMP的两块共聚物中的度敏感分子旋转器.
  • 使用光终身成像显微镜 (FLIM) 监测局部溶解环境.
  • 引入DMSO和THF作为模型溶剂以诱导溶解变化.

主要成果:

  • 在定量上发现了对溶解变化的区块选择性反应.
  • 与传统的1HNM光谱相比,该方法显示出更高的灵敏度.
  • 揭示了之前未公开的区块共聚物溶解和组装行为.

结论:

  • 开发的分子转子FLIM方法为研究块共聚物溶解提供了强大的分析工具.
  • 这种技术为溶剂触发组装和拆卸提供了细致的机械洞察力.
  • 这些发现可以精确调整块共聚合物自组装工艺.